To cite package ‘ps’ in publications use:

  Loden J, Daeschler D, Rodola' G, Csárdi G (2024). _ps: List, Query,
  Manipulate System Processes_. R package version 1.8.0,
  <https://CRAN.R-project.org/package=ps>.

A BibTeX entry for LaTeX users is

  @Manual{,
    title = {ps: List, Query, Manipulate System Processes},
    author = {Jay Loden and Dave Daeschler and Giampaolo Rodola' and Gábor Csárdi},
    year = {2024},
    note = {R package version 1.8.0},
    url = {https://CRAN.R-project.org/package=ps},
  }